Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
va trien » va truyen, va thiet, va tuyen
va triet » va thiet, ve triet, cua triet
ky trang » ke trang, ky trong, ky nang
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
lap duc » lap du, lap doc, giap duc
duc gia » quoc gia
su can » su van, su cao, tu can
va lap » va dap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su can ((ky trang) OR (ky tang)) xa hoi. hieu va lap duc gia thanh phan ((va triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su can ((ky trang) OR (ky tang)) xa hoi. hieu va lap duc gia thanh phan ((va triet) OR (va trien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su can ((ky trang) OR (ky tang)) xa hoi. hieu va lap duc gia thanh phan ((va triet) or (va trien))*".